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Re: Fix ldbl-128ibm atanl spurious underflows (bug 14871)

From: Andreas Jaeger <aj at suse dot com>
To: "Joseph S. Myers" <joseph at codesourcery dot com>
Cc: libc-alpha at sourceware dot org
Date: Thu, 22 Nov 2012 19:39:53 +0100
Subject: Re: Fix ldbl-128ibm atanl spurious underflows (bug 14871)
References: <Pine.LNX.4.64.1211221728310.1051@digraph.polyomino.org.uk>

On 11/22/2012 06:29 PM, Joseph S. Myers wrote:

This patch fixes spurious underflows for atanl for ldbl-128ibm, bug
14871, in a similar way to the ldbl-128 fix.  Since there were such
underflows for small inputs, not shown by the testsuite, as well as
for large inputs, shown by existing tests, this patch adds new tests
to the testsuite for small inputs to atan.

Tested that this eliminates the spurious underflow exceptions on
powerpc, and that no new ulps are needed for the new tests on x86_64 /
x86.

Thanks, this is fine,

Andreas
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References:
- Fix ldbl-128ibm atanl spurious underflows (bug 14871)
  - From: Joseph S. Myers

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